نتایج جستجو برای: phenolic extracts

تعداد نتایج: 108821  

2005
Chrissanthy Papadopoulou Kalliopi Soulti Ioannis G. Roussis

The aim of this study was to assess antimicrobial activities of wine phenolic extracts. The potential antimicrobial activity of alcohol-free red and white wine extracts against pathogenic strains of Staphylococcus aureus, Escherichia coli and Candida albicans was studied using the agar well diffusion method. Total phenolic content of wine extracts was determined by the Folin-Ciocalteu method, w...

Journal: :Molecules 2012
Cristiane B de Oliveira Lucimara N Comunello Adroaldo Lunardelli Robson H Amaral Melissa G S Pires Gabriela Lucas da Silva Vanusa Manfredini Carmen Regla Vargas Simone C B Gnoatto Jarbas R de Oliveira Grace Gosmann

Baccharis trimera is a plant popularly used as a tea and to treat gastrointestinal diseases and inflammatory processes as well. The total phenolic content was determined and the antioxidant and anti-inflammatory activities of six extracts (dichloromethane, ethyl acetate, butanol, aqueous, saponin and phenolic) from B. trimera were evaluated. Using carrageenan-induced pleurisy as a model of acut...

2015

The present study determined the phenolic and flavonoid contents in Amomum chinense C. leaf extracts obtained using four extracting solvents(distilled water, 80% methanol, 80% ethanol and 80% acetone)with various extraction times (6h, 12h and 24h) at 37oC. All extraction conditions significantly (p <0.05) affected the phenolic contents and antioxidant activity of the leaf extracts. The optimal ...

Journal: :Molecules 2018
Qing Li Shihua Yang Yongqiang Li Xiaofeng Xue Yonghua Huang Hengguo Luo Yiming Zhang Zhichao Lu

Mistletoes are used medicinally in order to treat various human illnesses. Few studies have reported on the phenolic content and antioxidant properties of Chinese mistletoes (CMs). In this work, the total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activities of soluble and insoluble-bound phenolic extracts from CMs hosted by Camellia assamica (Mast.) Chang (CMC) and ...

Journal: :Food chemistry 2015
Patricia Nyembwe Amanda Minnaar Kwaku G Duodu Henriëtte L de Kock

The role of phenolics and saponins in contributing to bitterness in marama beans, an underutilized legume, especially when roasted, was investigated. Marama beans were roasted at 150°C for 20, 25 or 30 min, then dehulled to separate cotyledons, and pastes were prepared from these. Water extracts were prepared from full fat and defatted flours from roasted and unroasted marama cotyledons. A sens...

2014
Dongxiao Su Ruifen Zhang Fangli Hou Mingwei Zhang Jinxin Guo Fei Huang Yuanyuan Deng Zhencheng Wei

BACKGROUND The phenolic contents and antioxidant activities of fruits could be underestimated if the bound phenolic compounds are not considered. In the present study, the extraction efficiencies of various solvents were investigated in terms of the total content of the free and bound phenolic compounds, as well as the phenolic profiles and antioxidant activities of the extracts. METHODS Five...

2015
Alam Zeb

Phenolic profile, antioxidant potential and pigment contents of wild watercress (Nasturtium officinale L.) were studied to assess the potential for future studies and its applications in neutraceuticals and bioactive functional ingredients. Different extracts of watercress (roots, stem and leaves) were analysed for pigment composition, total phenolic contents, and radical scavenging activity. T...

2015
Guzalnur Abliz Fatima Mijit Li Hua Guzalnur Abdixkur Tangnur Ablimit Nurmuhammat Amat Halmurat Upur

BACKGROUND Abnormal Savda Munziq (ASMq) is a herbal preparation used in Traditional Uighur Medicine for the treatment cancer. The polyphenol is main compounds contained in ASMq preparation responsible for anticancer effect of ASMq. METHODS In this study,Real-time quantitative Polymerase Chain Reaction (RT-PCR) assay, MTT assay and flow cytometry were used to investigate the effect of polyphen...

2015
Michał Miłek Jaroslav Legáth

Total phenolic content and antioxidative properties of Taraxacum officinale leaves and flowers extract was studied. Extracts was made with different solvents: classical organic and surfactant solutions. The results showed that all examined extracts contain some polyphenols and have antioxidant potential against DPPH radical and reducing power (Fe3+ Fe2+). Leaf extracts made with organic solvent...

2013
Dragana M. Vučić Miroslav R. Petković Branka B. Rodić-Grabovac Sava M. Vasić Ljiljana R. Čomić

Antibacterial activity, total phenolic content and flavonoid concentrations of extracts from the leaves of Arctostaphylos uva-ursi L. were performed. Tested bacterial strains are 20 clinical isolates, including different strains of Escherichia coli and Enterococcus faecalis. The total phenolic content was determined using Folin-Ciocalteu reagent. The concentration of flavonoids in extracts were...

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